Hi jeremy,
(Tula, how can you be so sure )
Jeremy, is your light a long tube with 2 prongs on each end?
If so, read the writing on the tube. Does it say C.W. or cool white and are there letters and numbers like T-12 or T-8.
Just to get the ball rolling _________________Think like a fish

Whoops my bad.
OK here goes, brand name - Eclipse
Yes it does have to prongs at EACH end
It is a F18T8 Natural daylight bulb, "Made in China" for Marineland.
Measurements - ~58cm excluding prongs. I'm guessing its a standard lightbulb for a 33 gallon, cheap canopy, cheap bulb.

Ahh thanks for the info david...I just went to Walmart to pick up a bulb, pretty good quality for a decent price. I can totally tell the difference between the stock lightbulb and this one...WAY better quality! Most of the bulbs I went around looking for were about $25-35...but this one was for 12